Scaling issue for charts

[Ralf_Stockmann]

I built something. I thought someone might want to give it a try before I release it.

The goal was to have a low-threshold and robust approach:

1. analyze if a post contains an SVG element
2. if so, display a text link “zoom” next to it
3. open the SVG in a new browser window where you can zoom, print, etc. as you like

GitHub - rstockm/svg-zoom: Discourse theme component that adds zoom functionality to Mermaid/SVG elements in posts